Fuel injector Constant

[Mike Rolica]

nope the ecm has no idea what it is at.  I have a neat program that figures
out what your actual flow for the fuel pressure that the inj is at. Or you
can find it at this site:
>    http://www.mindspring.com/~recaro_ta/downloads/FbodComp.exe  is also a
> good efi site!! 
 
> From:	Bruce Wilcox (EUS) [SMTP:EUSBEW at am1.ericsson.se]
> Sent:	Thursday, September 09, 1999 9:22 AM
> To:	'gmecm at efi332.eng.ohio-state.edu'
> Subject:	RE: Fuel injector Constant
> 
> Thanks Mike,
> 
> Do you know if the standard pressure is a variable in the EPROM??
> 
> Best Regards,
> 
> Bruce Wilcox
> 
> > -----Original Message-----
> > From:	Mike Rolica [SMTP:mrolica at meridian-mag.com]
> > Sent:	Thursday, September 09, 1999 9:02 AM
> > To:	'gmecm at efi332.eng.ohio-state.edu'
> > Subject:	RE: Fuel injector Constant
> > 
> > >That figure is for a set standard pressure.  the actual output of the
> > >injector would depend on what the fuel pressure reg is set at at the
> > >factory.  Don't quote me on this but I think the standard is 35psi,
> > whereas
> > >tpi in 87 is set at 39psi.  I'm running 24lbs/hr injectors on my 355TPI
> > >@52psi and I have no problems with rich idle with the OEM chip.  When
> you
> > >run at a higher fuel pressure, the fuel atomizes better  it's more
> > "misty"
> > >and performance is better.  do you have an adjustable fuel pressure
> reg.?
> > I
> > >made mine, works good!
> > 
> > > -----Original Message-----
> > > From:	Bruce Wilcox (EUS) [SMTP:EUSBEW at am1.ericsson.se]
> > > Sent:	Thursday, September 09, 1999 8:20 AM
> > > To:	'gmecm at efi332.eng.ohio-state.edu'
> > > Subject:	Fuel injector Constant
> > > 
> > > Hi Guys,
> > > 
> > > I looked at the fuel injector constants for various displacement 1987
> > TPI
> > > engines(1227165 ECU). The results are very interesting.
> > > 
> > > To my knowledge, the 87 350 injector should be 22 Lbs/Hr and the 87
> 305
> > > injector should be 19 Lbs/Hr. Could someone verify these numbers???
> > > 
> > > The 350 injector constant stored in the EPROM translated to 23.09
> Lbs/Hr
> > > and
> > > the 305 injector constant translates to 20.86 Lbs/Hr. Does anyone have
> > an
> > > idea why the discrepancy exists??
> > > 
> > > Thanks and Best Regards,
> > > 
> > > Bruce Wilcox
> > >